Nelayan di perairan bunyu masih banyak menggunakan alat tangkap bubu dikarenakan target hasil tangkapan bubu yang memiliki nilai ekonomis yang cukup tinggi. ikan kakap merah (lutjanus sp.) merupakan salah satu target hasil tangkapan dari alat tangkap bubu. informasi terkait aspek distribusi ukuran dab hubungan panjang berat ikan kakap merah hasil tangkapan bubu di indonesia sendiri masih relatif sedikit. penelitian ini bertujuan untuk mengetahui distribusi ukuran serta hubungan panjang berat ikan kakap merah yang tertangkap menggunakan alat tangkap bubu modifikasi berbahan poly vinyl chloride (pvc) di perairan bunyu. penelitian ini dilakukan dari bulan september sampai bulan oktober 2020. hasil penelitian menunjukkan bahwa jumlah sampel ikan kakap merah yang tertangkap sebanyak 59 ekor. distribusi ukuran panjang total ikan kakap merah yang tertangkap berkisar pada ukuran 12.3-30.2 cm, ukuran panjang standar berkisar 9.6-20.4 cm dan berat tubuh ikan berkisar pada berat 34-451 gram. berdasarkan analisa hubungan panjang berat terkonfirmasi sifat pertumbuhan ikan kakap merah hasil tangkapan bubu adalah alometrik negatif. persamaan pada hubungan panjang total (pt) dan berat (b) adalah y = 0.0432x2.6751 dan pada panjang standar (ps) dan berat (b) adalah y = 0.0947x2.6134. hasil pengujian kondisi perairan terhadap jumlah hasil tangkapan didapatkan dengan nilai signifikansi > 0.05, bermakna bahwa tidak terdapat pengaruh hasil tangkapan terhadap faktor kondisi perairan. kata kunci: kakap merah, bubu modifikasi, perairan bunyu, panjang total, panjang standar

Fishermen in the water of bunyu still use a lot of fishing gear because the target is traps that have a fairly high economic value. red snapper (lutjanus sp) is one of the catch targets from trap fishing gear. information related to the aspect of size distribution and the relationship between length and weight of red snapper caught by traps in indonesia is still relatively small. this study aims to determine the size distribution and length and weight relationship of red snapper caught using modified poly vinyl chloride (pvc) traps in bunyu waters. this research was conducted from september to october 2020. the results showed that the number of samples of red snapper caught was 59 fish. the distribution of the total length ranged from 9.6-20.4 cm and the body weight of the fish ranged from 34-451 grams. based on the analysis of the relationship between length and weight, it was confirmed that the growth properties of red snapper caught by traps were negative allometric. the equation for the relationship between total length (pt) and weight (b) is y=0.0432x2.6751 and the standard length (ps) and weight (b) is y = 0.0947x2.6134. the results of testing the condition of the waters on the number of catches were obtained with a significance value > 0.05, meaning that there was no effect of the catch on the water condition factor. keywords: red snapper, modifies bubu, bunyu waters, total length, standard length